文献类型：期刊文献

英文题名：Economical, green route to highly fluorescence intensity carbon materials based on ligninsulfonate/graphene quantum dots composites: Application as excellent fluorescent sensing platform for detection of Fe3+ ions

作者：Xu, Lina[1,2,3] Mao, Wei[1,2,3] Huang, Jinrui[1,2,3] Li, Shouhai[1,2,3] Huang, Kun[1,2,3] Li, Mei[1,2,3] Xia, Jianling[1,2,3] Chen, Qiang[4]

第一作者：许利娜

通信作者：Xia, JL[1];Xia, JL[2];Xia, JL[3]|[a00056ccf71e40731d22a]夏建陵;

机构：[1]Chinese Acad Forestry, Key Lab Biomass Energy & Mat, Nanjing 210042, Jiangsu, Peoples R China;[2]Chinese Acad Forestry, State Forestry Adm, Key & Open Lab Forest Chem Engn, Nanjing 210042, Jiangsu, Peoples R China;[3]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Natl Engn Lab Biomass Chem Utilizat, Nanjing 210042, Jiangsu, Peoples R China;[4]Nanjing Univ, Sch Chem & Chem Engn, Nanjing 210093, Jiangsu, Peoples R China

年份：2016

卷号：230

起止页码：54-60

外文期刊名：SENSORS AND ACTUATORS B-CHEMICAL

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000374329300008)】；

基金：We gratefully acknowledge the National Natural Science Foundation of China (31170544, 51272100), the Changzhou Science and Technology Research Project and Jiangsu Collaborative Innovation Center of Biomedical Functional Materials.

语种：英文

外文关键词：Lignosulfonate; Graphene quantum dots; Fluorescent sensor; Ferric ion; pi-pi interactions

摘要：A facile, economical, and green method has been developed to prepare a new fluorescent sensor based on ligninsulfonate/graphene quantum dots (SL/GQDs) core/shell hybrids for label-free sensitive and selective detection of Fe3+. The combination of these two materials brings both excellent photoluminescent properties (the fluorescence intensity of SL/GQDs composites is four times higher than the free GQDs) and nice selectivity. In this composite, SL molecule plays two key roles in the system as a pi-rich and sulfur incorporated compound to enhance the fluorescence and as a chelator to detect Fe3+. The obtained sensor presents excellent sensitivity and selectivity toward Fe3+ and exhibits a good linearity in the range of 0.005-500 mu M with a detection limit as low as 0.5 nM. We have further explored the practical use of such proposed probe for Fe3+ determination in lake water samples, which shows promise in environmental determination. (C) 2015 Elsevier B.V. All rights reserved.